[Logs] Update block action description

[pedrosousa]

Summary

Requested via internal chat.

[hyperlint-ai]

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PR Change Summary

Updated the description of the block action in the security fields documentation to clarify the HTTP status codes that can be returned.

• Revised the block action description to specify that it can return HTTP status codes 403, 429, or any other 4XX status code.

Modified Files

• src/content/docs/logs/reference/security-fields.mdx

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/logs/	@soheiokamoto, @angelampcosta, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://be33ff62.preview.developers.cloudflare.com
Preview Branch URL: https://pedro-2025-05-27-logs-update-block-desc.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/logs/reference/security-fields/	https://pedro-2025-05-27-logs-update-block-desc.preview.developers.cloudflare.com/logs/reference/security-fields/